DOS
A OS where the size of the mouse driver do matter
A OS where the size of the mouse driver do matter
DOS is acronym for closely related operating systems for the IBM PC. Examples are MS-DOS and FreeDOS. MS-DOS is what people used in the old days and FreeDOS is what you will use now. To just run the programs without installing the real OS it is also possible to use the emulator DOSBox.
Information on DOS batch files.